Update bootstrap requirement from ~> 4.0 to >= 4, < 6 in /backend#3

dependabot[bot] wants to merge 1 commit into

masterupsidelab/spree:masterfrom

dependabot/bundler/backend/bootstrap-gte-4-and-lt-6upsidelab/spree:dependabot/bundler/backend/bootstrap-gte-4-and-lt-6Copy head branch name to clipboard